Rocket Report: Bloomberg calls for SLS cancellation; SpaceX hits century mark
- by Ars Technica
- Oct 18, 2024
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Sirius completes engine test campaign. French launch startup Sirius Space Services said Thursday that it had completed a hot fire test campaign of the thrust chamber for its STAR-1 rocket engine, European Spaceflight reports. During the campaign, the prototype completed two 60-second hot fire tests powered by liquid methane and liquid oxygen. The successful completion of the testing validates the design of the STAR-1 thrust chamber. Full-scale engine testing may begin during the second quarter of next year.
A lot of engines needed ... Sirius Space Services is developing a range of three rockets that all use a modular booster system. Sirius 1 will be a two-stage single-stick rocket capable of delivering 175 kilograms to low-Earth orbit. Sirius 13 will feature two strap-on boosters and will have the capacity to deliver 600 kilograms. Finally, the Sirius 15 rocket will feature four boosters and will be capable of carrying payloads of up to 1,000 kilograms. (submitted by Ken the Bin)
SpaceX, California commission lock horns over launch rates. Last week the California Coastal Commission rejected a plan agreed to between SpaceX and the US Space Force to increase the number of launches from Vandenberg Space Force Base to as many as 50 annually, the Los Angeles Times reports. The commission voted 6–4 to block the request to increase from a maximum of 36 launches. In rejecting the plan, some members of the commission cited their concerns about Elon Musk, the owner of SpaceX. "We’re dealing with a company, the head of which has aggressively injected himself into the presidential race," commission Chair Caryl Hart said.
Is this a free speech issue? ... SpaceX responded to the dispute quickly, suing the California commission in federal court on Tuesday, Reuters reports. The company seeks an order that would bar the agency from regulating the company’s workhorse Falcon 9 rocket launch program at Vandenberg. The lawsuit claims the commission, which oversees use of land and water within the state’s more than 1,000 miles of coastline, unfairly asserted regulatory powers. Musk’s lawsuit called any consideration of his public statements improper, violating speech rights protected by the US Constitution. (submitted by brianrhurley)
SpaceX launches 100th rocket of the year. SpaceX launched its 100th rocket of the year early Tuesday morning and followed it up with another liftoff just hours later, Space.com reports. SpaceX's centenary mission of the year lifted off from Florida with a Falcon 9 rocket carrying 23 of the company's Starlink Internet satellites aloft.
Mostly Falcon 9s ... The company followed that milestone with another launch two hours later from the opposite US coast. SpaceX's 101st liftoff of 2024 saw 20 more Starlinks soar to space from Vandenberg Space Force Base in California. The company has already exceeded its previous record for annual launches, 98, set last year. The company's tally in 2023 included 91 Falcon 9s, five Falcon Heavies, and two Starships. This year the mix is similar. (submitted by Ken the Bin)
Fifth launch of Starship a massive success. SpaceX accomplished a groundbreaking engineering feat Sunday when it launched the fifth test flight of its gigantic Starship rocket and then caught the booster back at the launch pad in Texas with mechanical arms seven minutes later, Ars reports. This achievement is the first of its kind, and it's crucial for SpaceX's vision of rapidly reusing the Starship rocket, enabling human expeditions to the Moon and Mars, routine access to space for mind-bogglingly massive payloads, and novel capabilities that no other company—or country—seems close to attaining.
Catching a rocket by its tail ... High over the Gulf of Mexico, the first stage of the Starship rocket used its engines to reverse course and head back toward the Texas coastline. After reaching a peak altitude of 59 miles (96 kilometers), the Super Heavy booster began a supersonic descent before reigniting 13 engines for a final braking burn. The rocket then shifted down to just three engines for the fine maneuvering required to position the rocket in a hover over the launch pad. That's when the launch pad's tower, dubbed Mechazilla, ensnared the rocket in its two weight-bearing mechanical arms, colloquially known as "chopsticks." The engines switched off, leaving the booster suspended perhaps 200 feet above the ground. The upper stage of the rocket, Starship, executed what appeared to be a nominal vertical landing into the Indian Ocean as part of its test flight.
Clipper launches on Falcon Heavy. NASA's Europa Clipper spacecraft lifted off Monday from Kennedy Space Center in Florida aboard a SpaceX Falcon Heavy rocket, Ars reports, kicking off a $5.2 billion robotic mission to explore one of the most promising locations in the Solar System for finding extraterrestrial life. Delayed several days due to Hurricane Milton, which passed through Central Florida late last week, the launch of Europa Clipper signaled the start of a five-and-a-half- year journey to Jupiter, where the spacecraft will settle into an orbit taking it repeatedly by one of the giant planet's numerous moons.
Exploring oceans, saving money ... There's strong evidence of a global ocean of liquid water below Europa's frozen crust, and Europa Clipper is going there to determine if it has the ingredients for life. “This is an epic mission," said Curt Niebur, Europa Clipper's program scientist at NASA Headquarters. "It’s a chance for us not to explore a world that might have been habitable billions of years ago, but a world that might be habitable today, right now." The Clipper mission was originally supposed to launch on NASA's Space Launch System rocket, but it had to be moved off that vehicle because vibrations from the solid rocket motors could have damaged the spacecraft. The change to Falcon Heavy also saved the agency $2 billion.
ULA recovers pieces of shattered booster nozzle. When the exhaust nozzle on one of the Vulcan rocket's strap-on boosters failed shortly after liftoff earlier this month, it scattered debris across the beachfront landscape just east of the launch pad on Florida's Space Coast, Ars reports. United Launch Alliance, the company that builds and launches the Vulcan rocket, is investigating the cause of the booster anomaly before resuming Vulcan flights. Despite the nozzle failure, the rocket continued its climb and ended up reaching its planned trajectory heading into deep space.
Not clear what the schedule impacts will be ... The nozzle fell off one of Vulcan's two solid rocket boosters around 37 seconds after taking off from Cape Canaveral Space Force Station on October 4. A shower of sparks and debris fell away from the Vulcan rocket when the nozzle failed. Julie Arnold, a ULA spokesperson, confirmed to Ars that the company has retrieved some of the debris. "We recovered some small pieces of the GEM 63XL SRB nozzle that were liberated in the vicinity of the launch pad," Arnold said. "The team is inspecting the hardware to aid in the investigation." ULA has not publicly said what impacts there might be on the timeline for the next Vulcan launch, USSF-106, which had been due to occur before the end of this year.
Bloomberg calls for cancellation of the SLS rocket. In an op-ed that is critical of NASA's Artemis Program, billionaire Michael Bloomberg—the founder of Bloomberg News and a former US Presidential candidate—called for cancellation of the Space Launch System rocket. "Each launch will likely cost at least $4 billion, quadruple initial estimates," Bloomberg wrote. "This exceeds private-sector costs many times over, yet it can launch only about once every two years and—unlike SpaceX’s rockets—can’t be reused."
NASA is falling behind ... Bloomberg essentially is calling for the next administration to scrap all elements of the Artemis Program that are not essential to establishing and maintaining a presence on the surface of the Moon. "A celestial irony is that none of this is necessary," he wrote. "A reusable SpaceX Starship will very likely be able to carry cargo and robots directly to the moon—no SLS, Orion, Gateway, Block 1B or ML-2 required—at a small fraction of the cost. Its successful landing of the Starship booster was a breakthrough that demonstrated how far beyond NASA it is moving." None of the arguments that Bloomberg is advancing are new, but it is noteworthy to hear them from such a prominent person who is outside the usual orbit of space policy commentators.
Artemis II likely to be delayed. A new report from the US Government Accountability Office found that NASA's Exploration Ground Systems program—this is, essentially, the office at Kennedy Space Center in Florida responsible for building ground infrastructure to support the Space Launch System rocket and Orion—is in danger of missing its schedule for Artemis II, according to Ars Technica. The new report, published Thursday, finds that the Exploration Ground Systems program had several months of schedule margin in its work toward a September 2025 launch date at the beginning of the year. But now, the program has allocated all of that margin to technical issues experienced during work on the rocket's mobile launcher and pad testing.
Heat shield issue also a concern ... NASA also has yet to provide any additional information on the status of its review of the Orion spacecraft's heat shield. During the Artemis I mission that sent Orion beyond the Moon in late 2022, chunks of charred material cracked and chipped away from Orion's heat shield during reentry into Earth's atmosphere. Once the spacecraft landed, engineers found more than 100 locations where the stresses of reentry damaged the heat shield. To prepare for the Artemis II launch next September, Artemis officials had previously said they planned to begin stacking operations of the rocket in September of this year. But so far, this activity remains on hold pending a decision on the heat shield issue.
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